Journal article
Porous Two‐Dimensional Transition Metal Carbide (MXene) Flakes for High‐Performance Li‐Ion Storage
ChemElectroChem, v 3(5), pp 689-693
May 2016
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Herein we develop a chemical etching method to produce porous two‐dimensional (2D) Ti3C2Tx MXenes at room temperature in aqueous solutions. The as‐produced porous Ti3C2Tx (p‐Ti3C2Tx) have larger specific surface areas and more open structures than their pristine counterparts, and can be fabricated into flexible films with, or without, the addition of carbon nanotubes (CNTs). The as‐fabricated p‐Ti3C2Tx/CNT films showed significantly improved lithium ion storage capabilities compared to pristine Ti3C2Tx based films, with a very high capacity of ≈1250 mAh g−1 at 0.1 C, excellent cycling stability, and good rate performance (330 mAh g−1 at 10 C). Using the same chemical etching method, we also made porous Nb2CTx and V2CTx MXenes. Therefore, this study provides a simple, yet effective, procedure to introduce pores into MXenes and possibly other 2D sheets that in turn, can enhance their electrochemical properties.
Flaked out: Porous Ti3C2Tx MXene flakes are synthesized by chemical etching of delaminated Ti3C2Tx flakes at room temperature. Compared with pristine Ti3C2Tx, the as‐produced porous flakes have larger specific surface areas, more open structures, and significantly improved lithium‐ion‐storage capabilities.
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Details
- Title
- Porous Two‐Dimensional Transition Metal Carbide (MXene) Flakes for High‐Performance Li‐Ion Storage
- Creators
- Chang E Ren - Drexel UniversityMeng‐Qiang Zhao - Drexel UniversityTaron Makaryan - Drexel UniversityJoseph Halim - Linköping UniversityMuhammad Boota - Drexel UniversitySankalp Kota - Drexel UniversityBabak Anasori - Drexel UniversityMichel W Barsoum - Linköping UniversityYury Gogotsi - Drexel University
- Publication Details
- ChemElectroChem, v 3(5), pp 689-693
- Publisher
- Wiley
- Number of pages
- 5
- Grant note
- U.S. Department of Energy, Office of Science, and Office of Basic Energy Sciences CSC Chinese Scholarship Council
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000379985500002
- Scopus ID
- 2-s2.0-84975727144
- Other Identifier
- 991014969752904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Electrochemistry